Please read the brief descriptions of research scenarios and then choose the sta

Question

Please read the brief descriptions of research scenarios and then choose the statistical procedure that would be the best test of the variables involved.

A. Paired sample t-test.

B. One proportion confidence interval.

C. Independent sample t-test.

D. Chi-square test of homogeneity.

E. T-test for a regression slope.

1. Testing for differences in the counts of males and females who do or do not play college sports.

2. Comparing the proportion of people who support a proposed bill against the 50% needed to vote the bill into law.

3. Testing for a relationship between math test scores and reading test scores.

4. Comparing the average ages of registered democrats and republicans.

5. Comparing the IQ of oldest and youngest siblings.

Explanation / Answer

Solution:-

1) C. Independent sample t-test.

The sample are not related to each other that's why we would use the Independent sample t-test.

2) B. One proportion confidence interval.

Population proportion is given, we neeed to check the given sample proportion.

3) E. T-test for a regression slope.

4) D. Chi-square test of homogeneity.

5) A. Paired sample t-test.

The sample are related to other sample that's why we would use the dependent sample t-test i.e Paired sample t test.

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